Door-check.



'-No. 693,02I. Patented Feb. il, |902.

J. .HORSFIELL D008 CHECK.

(Application led Apr. 10, 1961.)

(N0 Model.)

UNITED STATES ATENT OFFICE.

JOHN I'IOBSFIELD, OF CHICAGO, ILLINOIS, ASSIGNOR TO E. EMMA HORSFIELD,OF CHICAGO, ILLINOIS.

DOORCHECK.

SPECIFICATION forming part of Letters Patent No.

693,021, dated February 1 1, 1902.

Application filed April 10, i901. Serial No. 55,131. (No model.)

T0 all whom it may concern:

Beit known that I, JOHN I-IORSFIELD, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Door-Checks, of whichthe following is a specification.

This invention relates to means for preventing the opening of a door orwindow beyond a certain point; and its object is to furnish a device ot'this character that will be simple and cheap in construction and durableand efficient in operation and one that will stop the swing of the doorgently and with little or no noise, and is more particularly designed totake the place of the chains which are now in use for this purpose. Byhaving a device of this character on a door the door-check is preventedfrom becoming deranged or the hinges broken.

It consists, then, in combining with a number of telescoping sectionsshort springs to act as buffers, in combining with the door or windowand its frame a plurality of telescoping members, with suitablebuffer-springs, and means for securing the members to the frame anddoor.

Other` details and features will be more specifically pointed outhereinafter'.

In the drawings accompanying this specification, Figure l is a sectionalview of a device embodying my invention. Fig. 2 is a View of the samewhen extended. Fig. 3 is a plan view showing the method of connectingthe check to the door.

A is a rod connected to the door B by suitable means, as by theball-and-socket joint and bracket a., as shown. At the opposite end is acap or flange ct. This rod is telescoped within a tube C, having a capc, with a hole o therein which slidingly fits *the rod A. This tube istelescoped in a second tube D, passing through a cap d thereon, and isprovided at the other end with a cap c2. The end of the tube D issecured to the door-frame by the bracket E, as shown. Short sections ofsprings f are interposed between the telescoping sections to engage theflanges or caps when the check is extended, and thereby prevent unduejar or noise when the door is swung open. Holes g are shown in the tubesto allow the free passage of air in and out; but 1n certain cases it maybe desirable to leave one of the sections closed, and thereby form ayielding stop by the compression of the air in the tube.

The method of operation of the check is readily seen from Fig. 3. Whenthe door` is closed, the rods and tubes are telescoped, and draw out tothe desired limit as the door is opened.v

i Various changes in the details of construction and method of applyingthis invention will suggest themselves as coming within the scopethereof, and I do not limit myself to the exact construction shown; but

. What I claim, and desire to secure by Let# ters Patent, is

1. The combination with a door or equivalent device, of a rod hingedthereto, having its free end flanged or capped, a tube having anapertured cap in which the stem of said rod plays, and anged or cappedat its opposite end, a second tube having an apertured cap embracing thecylindrical portion of the lastmentioned tube, and being hinged at itsfarther end to apoint of support or retention, and means to cushion thesections as the door is thrown fully open, substantially as described.

2. The combination with a door or equivalent device, of a rod hingedthereto having its free end flanged, a tube having an apertured cap inwhich the stein of said rod plays, and flanged atits opposite end, asecond tube having an apertured cap embracing the cylindrical portion ofthe last-mentioned tube, and being hinged at its farther end to thedoorframe or point of retention, and short sections of springsinterposed between the various flanges and caps, substantially asdescribed.

3. In combination with a door or equiva; lent device, a rod hingedthereto telescoping' with tubular telescopic members, flanges andapertured ends on said rod and tubes to prevent their being drawn ontof` engagement, the outer tube being hinged to the door-frame, holes insaid tubes to allow the free p assage of air in `and out thereof, andshort sections of springsinterposed between the said flanges and caps tocushion the sections as the door is swung to the limit of its throw,substantially as described.

JOHN HORSFIELD.

Witnesses:

T. DAECY MCMAHON, E. HOFFMAN.

IOO

